Analysing powers and spin correlations in deuteron-proton charge exchange at 726 MeV

S. Dymov; T. Azaryan; Z. Bagdasarian; S. Barsov; J. Carbonell; D. Chiladze; R. Engels; R. Gebel; K. Grigoryev; M. Hartmann; A. Kacharava; A. Khoukaz; V. Komarov; P. Kulessa; A. Kulikov; V. Kurbatov; N. Lomidze; B. Lorentz; G. Macharashvili; D. Mchedlishvili; S. Merzliakov; M. Mielke; M. Mikirtychyants; S. Mikirtychyants; M. Nioradze; H. Ohm; D. Prasuhn; F. Rathmann; V. Serdyuk; H. Seyfarth; V. Shmakova; H. Ströher; M. Tabidze; S. Trusov; D. Tsirkov; Yu. Uzikov; Yu. Valdau; C. Weidemann; C. Wilkin

doi:10.1016/j.physletb.2015.04.019

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arXiv · 1503.00514

Analysing powers and spin correlations in deuteron-proton charge exchange at 726 MeV

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Abstract

The charge exchange of vector polarised deuterons on a polarised hydrogen target has been studied in a high statistics experiment at the COSY-ANKE facility at a deuteron beam energy of Td = 726 MeV. By selecting two fast protons at low relative energy E_{pp}, the measured analysing powers and spin correlations are sensitive to interference terms between specific neutron-proton charge-exchange amplitudes at a neutron kinetic energy of Tn ~ 1/2 Td =363 MeV. An impulse approximation calculation, which takes into account corrections due to the angular distribution in the diproton, describes reasonably the dependence of the data on both E_{pp} and the momentum transfer. This lends broad support to the current neutron-proton partial-wave solution that was used in the estimation.

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S. Dymov, T. Azaryan, Z. Bagdasarian, S. Barsov, J. Carbonell, D. Chiladze, R. Engels, R. Gebel, K. Grigoryev, M. Hartmann, A. Kacharava, A. Khoukaz, V. Komarov, P. Kulessa, A. Kulikov, V. Kurbatov, N. Lomidze, B. Lorentz, G. Macharashvili, D. Mchedlishvili, S. Merzliakov, M. Mielke, M. Mikirtychyants, S. Mikirtychyants, M. Nioradze, H. Ohm, D. Prasuhn, F. Rathmann, V. Serdyuk, H. Seyfarth, V. Shmakova, H. Ströher, M. Tabidze, S. Trusov, D. Tsirkov, Yu. Uzikov, Yu. Valdau, C. Weidemann, C. Wilkin. 2015-03-02. Analysing powers and spin correlations in deuteron-proton charge exchange at 726 MeV. https://doi.org/10.1016/j.physletb.2015.04.019

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